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134396 (1997 HM9)
Classification: Main-belt Asteroid          SPK-ID: 2134396
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2155636382978969 4.8636e-08  
a 2.57684972855316 1.3369e-08 au
q 2.021374625719293 1.2375e-07 au
i 3.983523218722908 4.3061e-06 deg
node 32.1528807872486 8.5337e-05 deg
peri 231.1323376321915 8.6163e-05 deg
M 180.0337551574167 1.365e-05 deg
tp 2459755.801975149886
(2022-Jun-25.30197515)
6.0086e-05 TDB
period 1510.887284956119
4.14
1.1758e-05
3.219e-08
d
yr
n .2382705868164452 1.8543e-09 deg/d
Q 3.132324831387027 1.6251e-08 au
  Orbit Determination Parameters
   # obs. used (total)      423  
   data-arc span      8323 days (22.79 yr)  
   first obs. used      1997-04-06  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63343  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:28:57  

Additional Information
 Earth MOID = 1.00875 au 
 Jupiter MOID = 1.96224 au 
 T_jup = 3.390 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO502849  

134396 (1997 HM9)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Alternate Designations
 1997 HM9 = 2001 FE161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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